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US Navy amphibious assault ship LHD 8: a unique hybrid propulsion system design

机译：美国海军两栖突击船LHD 8：独特的混合动力推进系统设计

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The recently commissioned U.S.S. Iwo Jima (LHD 7) is the last ship with conventional steam propulsion that the U.S. Navy plans to build. The LHD 8 is the next ship of the class and will be built as a modified repeat design of the LHD 7. The key modifications are steam propulsion being replaced with a hybrid propulsion system of main gas turbine engines augmented with auxiliary propulsion motors and electric powered auxiliaries replacing those powered by steam. The LHD 8 will also be the first USN surface ship to implement a 4160 VAC Zonal Electrical Distribution System (AC ZEDS) as well as the integrated power system concept for electrical power generation, distribution and propulsion. This paper presents the constraints and issues involved in the design process by addressing major design impacts and significant design concerns. This text explores the design options within the available trade space and illustrates specifically how the fleet/mission requirements, LHD 7 hull design and propulsion shafting constraints, schedule and funding drove the propulsion system design.
机译：最近委托美国。 IWO Jima（LHD 7）是最后一艘传统蒸汽推进的船，即美国海军计划建设。 LHD 8是班级的下一艘船，将作为LHD 7的改进的重复设计建造。关键修改是蒸汽推进器被用辅助推进电动机的主燃气涡轮发动机的混合动力推进系统所取代，包括辅助推进电动机和电动供电助剂取代蒸汽动力的助剂。 LHD 8也将是第一个实现4160 Vac区配电系统（AC ZED）以及用于电力发电，分配和推进的集成电力系统概念。本文通过解决重大设计影响和重要的设计问题，介绍了设计过程中涉及的制约因素和问题。本文探讨了可用的贸易空间内的设计选项，具体说明了车队/任务要求，LHD 7船体设计和推进轴系限制，进度和资金推动了推进系统设计。

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